Home / 21,206.48-29,272.80-18,210.29

Finding the Fourth Proportional to 21,206.48, 29,272.80 and 18,210.29

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Solution

The fourth proportional to 21,206.48, 29,272.80 and 18,210.29 is: 25,136.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,206.48 : 29,272.80 = 18,210.29 : x
  2. Step 2: Convert to fraction form
    21,206.48/29,272.80 = 18,210.29/x
  3. Step 3: Cross multiply
    21,206.48x = 29,272.80 × 18,210.29
  4. Step 4: Simplify right side
    21,206.48x = 533,066,177.11
  5. Step 5: Solve for x
    x = 533,066,177.11/21,206.48
  6. Step 6: Final answer
    x = 25,136.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.